An alternative approach of Caffarelli-Kohn-Nirenberg theorem based on blow-up argument was duo to
Lin, Ladyzhenskaya and Seregin [1]}, [2]}, where the corresponding \(\epsilon \) -regularity criterion at one scale reads
\(\left\Vert u\right\Vert _{L^{3}(Q(1))}+\Vert \Pi \Vert _{L^{3/2}(Q(1))} \le \epsilon .\) 
